package com.tedu.day02.oop;

/**
 * instanceof
 */
class Name{}
class ReName extends Name{}

public class instanceof关键字 {
    public static void main(String[]args){
        Name name=new Name();
        System.out.println(name instanceof Name);//ture
        System.out.println(name instanceof ReName);//false


        //继承---创建出来---关系---向上造型
        Name a=new ReName();
        System.out.println(a instanceof Name);//ture
        System.out.println(a instanceof ReName);//ture
    }
}
